3* (1-x)
3* (1-x) + 2 = -7
3*(1-x)+2=-7-3x=-7-3-2-3x=-12x=-4
3-3x
3-3x + 2 = -7
-3x= -7-2-3
-3x=-12
-x=-12:-3
x=4
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3*(1-x)+2=-7
-3x=-7-3-2
-3x=-12
x=-4
3-3x
3-3x + 2 = -7
-3x= -7-2-3
-3x=-12
-x=-12:-3
x=4